My smile.  I get more people interested in what I do because it seems I am always smiling.  I tell people good morning and even though I live in Los Angeles I get very positive responses.  I am clearly interested in other people and I ask them about themselves and what they do and in turn they ask me what I do.  That gives me an opportunity to share about myself and people are interested.  People want to deal with genuine people.  I have made friends out on the street!  A smile does not cost anything but it is worth so much in the hearts and lives of people.  Can a smile change your day?  Can a smile change your life?